Freestone · Limestone · Pyrénées-Orientales / Fenouillèdes, FR

Boulzane

A stone arch bridge crossing the shallow, rocky Boulzane river lined with dense green vegetation in the Fenouillèdes region of France

The Boulzane flows through the Fenouillèdes basin where Pyrenean stone creates clear water and good trout.

Poor · Brown Trout
Pheasant Tail Nymph · 14–18
Closed season
Out of season. Try elsewhere.
Closed — confidence not applicable today.
What moved it
  • Level1.21 mLast reading 47 min ago
  • Water temp10.9°C
  • ClarityClear
Today's fly
Pheasant Tail Nymph
Pheasant Tail Nymph14–18
Upstream
Conditions on the water
Live gauge
Level
Steady
1.21 m
Last reading 47 min ago
Water temp10.9°C
ClarityClear
Weather12°C
WindE 17 km/h
Pressure1014 hPa
Rain · recent0.5 mm
Rain · ahead1.1 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Ideal
11°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Likely species
Stoneflies
Gammarids
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 5 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 4 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Supporters see what else is on the menu.

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Evidence
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Alpine RhithrogenaHatch
2
3
3
2
Sculpin / Baitfish (Rivers)Hatch
2
3
3
3
3
3
3
3
2
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Brown Trout fly box

More balanced than the mountain-river pack. French nymphing still matters, but there is more room for dries, spiders and general searching flies.

Permits & access
Permit required — see local rules.
  • AAPPMA permits.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Aude (upper)
7.0 km
0
Brown trout · Grayling
Pisciculture du Canigó
29 km
Rainbow trout · Brown trout · Char
Pisciculture de la Fajolle
30 km
Rainbow trout · Brown trout · Char
Bouillouses Mountain Lakes
38 km
Brown trout
Pisciculture de Montferrier
42 km
Rainbow trout · Brown trout · Char
Gallery · 2
  1. A stone arch bridge crossing the shallow, rocky Boulzane river lined with dense green vegetation in the Fenouillèdes region of France
    The Boulzane river at Caudiès-de-Fenouillèdes
  2. Terrain map of the venue
    Terrain map
About this water

AAPPMA-managed with both fly-only and general beats. No-kill stretch available. Wild brown trout respond to seasonal patterns — Baetis in spring, sedges and mayflies through summer. Spate character after rainfall. Check local regulations for parcours requirements.

Hatches & food

No emergence timing has been documented, but DREAL reference-station monitoring at Montfort-sur-Boulzane records a stable, diverse and pollution-sensitive stonefly fauna across five families — a strong indicator of water quality and food base rather than a hatch window.

  • Limestone
Water quality (WFD)
  • Ecology: Good
  • Chemical: Unknown

WFD classification · FRDR10162

The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity72 × 12%8.6
Conditions total= 84
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 2nd Saturday of March → 3rd Sunday of September
Related guides
Pyrenees PlaybookFrench riversEuro Nymphingsubsurface methods
Booking & contacts
At a glance

Boulzane is a freestone river in Pyrénées-Orientales / Fenouillèdes, France. Its recorded elevation is about 449 m above sea level and the catchment geology is limestone. The river is described as roughly 40 km long. The species listed for this water is brown trout. The trout season is recorded as running from 2nd Saturday of March to 3rd Sunday of September. Best window recorded for anglers: March–September. Core methods listed: Euro nymphing; dry fly. Level and flow data for this water is linked from 1 gauge. Its Water Framework Directive ecological status is recorded as good. Access is recorded as day tickets through the local AAPPMA (angling association). Nearby waters in our listings include Aude (upper) at 7.0 km, Pisciculture du Canigó at 29 km and Pisciculture de la Fajolle at 30 km.